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# Looking for a Ready-Made Pure Sine Wave Inverter Design I am looking for an engineer or company that already has a **tested and working pure sine wave inverter design** available for sale or licensing. I am **not looking to develop a new inverter from scratch**. The design should preferably meet the following requirements: * 12V, 36V, 24V and 48V DC input * 120V / 220V AC output * 50/60 Hz * Low-frequency transformer based * Pure sine wave output * Approximately 1.5kW to 12kW continuous power * MOSFET based H-bridge * SPWM control * Battery charger / AC charging preferred * Automatic transfer between AC and inverter preferred * Short-circuit protection * Overload protection * Battery under-voltage and over-voltage protection * Over-temperature protection The package should include: * Complete schematic * Editable PCB design files * Gerber files * BOM * Firmware/source code * Microcontroller programming files * Transformer specifications * Calibration instructions * Test procedure * Technical support during prototype testing The design must already have been **built and tested on real hardware**. Please provide: 1. Photos or videos of the working inverter. 2. Output waveform measurements. 3. Maximum tested load. 4. PCB photos. 5. Information about units already manufactured using this design. 6. Price for the complete design. 7. Details about commercial manufacturing rights. I need the right to manufacture and sell products based on this design. Please do not bid if you only offer PCB layout services or if the inverter has never been physically tested.
Project ID: 40665622
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I can provide a **tested, production-ready pure sine wave inverter design**, not just PCB layout or theoretical work. My approach is based on proven low-frequency transformer topology with MOSFET H-bridge and SPWM control. I can target your required **1.5 kW–12 kW range**, with the priority voltage/power confirmed before delivery. The complete package can include schematic, editable PCB files, Gerbers, BOM, firmware/source code, and programming files. I will also provide transformer specifications, calibration procedure, protection settings, and prototype test documentation. For verification, I can supply **real-hardware photos/videos, oscilloscope waveform results, PCB photos, and tested-load evidence**. The design can incorporate battery protections, overload/short-circuit protection, thermal protection, charger, and automatic AC/inverter transfer. I understand that you require **commercial manufacturing and selling rights**, and licensing terms can be clearly defined upfront. I will provide technical support during prototype assembly, commissioning, calibration, and load testing. Please confirm your **priority power rating (1.5/3/5/12 kW) and battery voltage (12/24/36/48 V)** so I can propose the most suitable tested platform.
$140 USD in 4 days
6.9
6.9

Drawing on my 8+ years of experience as a certified electrical engineer and professional PCB designer, I am excited to present my compelling solution for your pure sine wave inverter design needs. Your project aligns perfectly with my skill set, having extensive expertise in circuit design, embedded systems, microcontroller programming and PCB layout. Furthermore, I assure you that every design I develop undergoes real-world hardware testing, eliminating any uncertainties and ensuring full functionality prior to delivery. My proficiency with tools such as Eagle, Altium, KiCAD, and EasyEDA has allowed me to create high-quality and effective PCB designs. My understanding of H-bridge MOSFET based designs that utilize SPWM control aligns perfectly with your stated power requirements and desired transfer capabilities. Being part of the top percentile of skilled professionals on this platform reaffirms my ability to deliver premier results within your budget and timeframe. So let's not delay- choose expertise you can trust to handle every aspect of your project, from complete schematic to firmware/source code, test procedures to technical support during prototype testing. Choose me for an all-encompassing solution that transforms your ideas into reality!
$240 USD in 7 days
7.0
7.0

With a passion for electronic product development and over [X] years of experience, I guarantee to deliver a tested, working and high-quality pure sine wave inverter design that perfectly matches your project requirements. My expertise in circuit design and electrical engineering extends to include power supply circuits (DC-DC, AC-DC conversions) and your detailed needs for low-frequency transformer based, MOSFET H-bridge inverter with SPWM control. Furthermore, being well-versed in PCB layout services enables me to provide you with editable PCB design files, gerber files, BOM, transformer specifications, calibration instructions and all other documentation you require. I can also program microcontrollers (like the STM32) for the firmware needs of your project. My proficiency in implementing assured wireless technologies makes battery charger/AC charging and automatic transfer between AC and inverter seamless reality. In terms of what sets my work apart is not only delivering on time but also without compromising quality. I am genuinely committed to delivering cost-effective solutions that satisfies client needs to sell and manufacture further! Let's discuss how I can contribute to your innovative project!
$140 USD in 2 days
6.9
6.9

Hi there, I have carefully reviewed your requirements and understand that you are specifically looking for an **existing, physically tested pure sine wave inverter design**, not a new development from scratch. With nearly five years of experience in mechatronics, power electronics, MOSFET switching stages, SPWM control, PCB design, protection circuits, and embedded systems, I can support the technical evaluation, adaptation, documentation, and prototype validation of a proven inverter platform, including transformer specifications, firmware, calibration, and manufacturing files. I also understand that complete editable source files and commercial manufacturing rights are mandatory. Please send me a message so we can discuss the required input voltage, target power rating, and licensing/manufacturing requirements. Best regards, Samuel tshibangu
$250 USD in 1 day
6.5
6.5

⭐⭐⭐⭐⭐ I understand you are specifically looking for a ready-made, physically tested inverter platform, not someone to develop a new inverter from scratch. I can provide the complete technical package for a proven design, subject to your required voltage/power configuration, including: • Complete schematic and editable PCB source • Gerbers and production BOM • MCU firmware/source and programming files • Transformer specifications and winding information • SPWM/control architecture and protection details • Calibration and production test procedures • Prototype/test support • Commercial manufacturing and licensing documentation For evaluation, I can provide actual hardware evidence rather than theoretical specifications: PCB photographs, oscilloscope waveform measurements, tested continuous-load results, protection testing and information about previous manufactured units. The commercial-rights aspect is important, so I’ll clearly document what is included in the license—manufacturing, modification, resale, territory, exclusivity/non-exclusivity and source-code rights—before any commitment.
$140 USD in 7 days
5.6
5.6

Hello, I am Muhammad Javed, an Electrical Engineer with more than 10 years of experience in power electronics, inverter systems, SPWM control, battery charging, and power conversion design. I understand you are looking for a proven, physically tested pure sine wave inverter design rather than developing one from scratch. I can provide a complete tested solution covering low-frequency transformer-based topology, MOSFET H-bridge, SPWM control, 50/60 Hz output, battery charging, automatic AC/inverter transfer, and essential protection functions. The package can include complete schematics, editable PCB files, Gerbers, BOM, firmware/source code, MCU programming files, transformer specifications, calibration instructions, and testing procedures. I can also provide real hardware evidence including working-unit photos/videos, oscilloscope waveform measurements, maximum tested load, PCB photos, and details of previously manufactured units. I understand that commercial manufacturing and selling rights are essential. I can discuss the complete design package, licensing terms, manufacturing rights, and technical support during prototype testing. My focus is on providing a reliable, production-ready design that has already been validated on real hardware. I would be glad to discuss the available design, test results, power ratings, and licensing cost with you.
$140 USD in 7 days
6.1
6.1

Hi, I understand that you are specifically looking for a physically tested pure sine-wave inverter design, not a new development or simple PCB-layout service. My background is in power electronics, embedded systems, circuit/PCB design, and control systems, and I can help evaluate and integrate a proven inverter platform covering the required 12/24/36/48V DC inputs and 120/220V AC, 50/60Hz output range. I can work with designs based on low-frequency transformers, MOSFET H-bridges and SPWM, including battery charging, automatic transfer, and protection for short circuit, overload, battery voltage, and temperature. For any existing design, I would first verify the actual hardware evidence rather than relying only on simulation: **output waveform, tested continuous load, PCB implementation, thermal performance, protection behavior, and available manufacturing history**. I can also review the complete documentation package including schematic, editable PCB files, BOM, firmware, transformer specifications, calibration/test procedures, and manufacturing rights. If you already have a specific tested inverter platform available, please share its **rated power, input/output configuration, test photos/waveforms, and licensing terms**. I can then assess whether it matches your requirements and help with prototype validation and production preparation. Regards,
$140 USD in 1 day
5.8
5.8

Hello, I understand you need a **proven, physically tested inverter design for purchase or licensing**, not a new design from scratch. I have 15+ years of experience in embedded systems, power electronics, STM32/PIC firmware, PCB design and industrial electronics. I can evaluate an existing inverter, verify the hardware, review firmware/documentation, and support prototype testing. Your requirements are within my technical scope, including low-frequency transformer topology, MOSFET H-bridge, SPWM, battery charging, automatic transfer, and protection for overload, short circuit, voltage and temperature. Before proceeding, I would verify: • Working hardware photos/videos • Oscilloscope output waveform • Maximum tested load • PCB and transformer specifications • Schematic, PCB, Gerbers and BOM • Firmware/source and programming files • Calibration and test procedures • Previous manufactured units • Manufacturing and commercial rights I can also reproduce and test the design under controlled loads before production. If you already have a tested design, please send the available documentation, test evidence, power ratings and licensing terms. I can evaluate its suitability for your 1.5kW–12kW product range. I am interested in a proven design with clear rights to manufacture and sell the final products.
$90 USD in 5 days
5.4
5.4

Hello sir, Did go through your job description and glad to share that I have enormous experience in working with Ready-Made, Tested Pure Sine Wave Inverter Wanted I'm a seasoned programmer and Engineer with quality experience in Flutter, React, Node.JS, SpringBoot, Frontend and Backend Development, Python, Matlab, R studio, C, C++, C#, OpenCV, OpenGL, Tesseract OCR, google vision, Statisticaal programming/R progamming data analysis Computing for Data Analysis Time Series & Econometric, Machine learning, AI, Deep learning, Matlab and Mathematica, 3D modeling, CAD/CAM,AutoCAD, 2D, Architectural Engineering, SolidWorks, Unity 3D, AutoCAD, 2D drawing, 2D draftingPCB, Electronics, Arduino, Embedded Systems Automation, Embedded and Firmware , IOT, Electrical/Mechanical Engineering I am a TOP Rated Freelancer, and you can check my reviews here as well: https://www.freelancer.com/u/mzdesmag. Looking forward to potentially working together on this project. Thanks and Best regards, Adekunle.
$250 USD in 2 days
5.3
5.3

I understand you're seeking a pre-engineered, validated pure sine wave inverter, similar to how you'd procure a critical component, rather than a custom development project. My expertise lies in optimizing and adapting existing, robust hardware designs for specific applications. My approach would involve reviewing your existing low-frequency transformer-based H-bridge designs, likely incorporating SPWM control, and verifying their compatibility with your specified input voltages (12V-48V) and output requirements (120V/220V, 50/60Hz, 1.5kW-12kW). This would include detailed simulation and potentially bench testing of the MOSFET drivers, PWM generation, and feedback loops to ensure stable pure sine wave output and efficient battery charging integration. To best assess suitability, could you confirm if any of your existing designs already incorporate automatic transfer switch (ATS) functionality or if that's a separate module you're open to integrating? I'd be happy to schedule a brief call to discuss your specific power and voltage needs in more detail.
$250 USD in 21 days
4.8
4.8

Dear Client, Your requirement is clear—you are not looking to fund another inverter R&D exercise. You want a design that has already survived real hardware, real loads and real debugging before you purchase manufacturing rights. PCB Must Innovations brings 30+ years of electronics and power-design experience across high-current MOSFET systems, protection, PCB design, thermal engineering, control electronics and production validation. I would not offer you an untested schematic and call it “ready-made.” Haha, an inverter becomes much less impressive when the sine wave disappears as soon as the load arrives. Before discussing any commercial package, I’m happy to have a free consultation to compare your required 12/24/36/48 V variants, 1.5–12 kW range, charger/transfer requirements and manufacturing-rights expectations against designs/assets that can actually be evidenced. One question: are you willing to license different proven hardware platforms for different power/input ranges, or must one existing architecture cover the complete 1.5–12 kW family? Message me with that answer and I can tell you immediately whether there is a sensible fit before either of us invests time. Kind Regards Prat PCB Must Innovations
$2,500 USD in 7 days
6.4
6.4

We can proceed with this request as a ready-made, tested pure sine wave inverter design with manufacturing rights is specifically what you need. The scope is clear: complete schematic, editable PCB files, Gerbers, BOM, firmware, MCU programming files, transformer specs, calibration instructions, test procedure, and prototype support. I understand the requirement is not for new development, but for an already built and validated low-frequency transformer-based inverter platform covering 12V/24V/36V/48V inputs, 120V/220V outputs, SPWM control, MOSFET H-bridge, protection features, and optional charger/transfer functionality. If the design package is available, I can review the documentation, manufacturing readiness, and commercial usage rights, then move quickly toward licensing and production planning. Please share the hardware evidence, tested load results, waveform measurements, PCB photos, and the exact terms for manufacturing and resale rights so we can evaluate fit and proceed efficiently.
$250 USD in 4 days
4.3
4.3

Hi, I can provide a physically tested pure sine wave inverter design with complete engineering documentation and production-ready files. I understand the requirements for 12/24/36/48V DC input, 120/220V AC output, low-frequency transformer operation, MOSFET H-bridge, SPWM control, charging, automatic transfer, and comprehensive protection. Using my expertise in Electronics, Electrical Engineering, Microcontrollers, Circuit Design, PCB Layout, Embedded Systems, and Firmware Development, I can provide schematics, editable PCB files, Gerbers, BOM, firmware/source code, MCU programming files, transformer specifications, calibration procedures, and test documentation. I can also provide real-hardware evidence, including working-unit photos/videos, oscilloscope waveforms, tested load results, PCB images, and manufacturing information. Commercial licensing and manufacturing rights can be discussed clearly. I’ll focus on a proven, reliable design rather than an untested prototype, with technical support throughout prototype validation and production.
$120 USD in 7 days
4.5
4.5

Hi, I can discuss providing a ready-made, previously tested pure sine wave inverter design package, not a new design from scratch. I understand your requirement clearly: you need a working hardware design with schematic, PCB files, BOM, firmware, transformer details, calibration notes, test procedure, and manufacturing/commercial rights. The design package can include: * Complete schematic * Editable PCB files * Gerbers * BOM * Firmware/source files * MCU programming files * Transformer specifications * Protection circuit details * SPWM control details * Calibration instructions * Testing procedure * Technical support during prototype testing I can also provide available proof of testing such as: * PCB photos * Working inverter photos/videos * Output waveform measurements * Tested load details * Protection test notes * Manufacturing/licensing discussion Before final agreement, I will share the design specifications, tested voltage/power range, waveform evidence, and clear terms for commercial manufacturing rights. I will not propose this as an untested PCB layout job. The focus will be on a ready-made, tested inverter design package suitable for prototype reproduction and future manufacturing. Best regards Ankit
$50 USD in 3 days
3.9
3.9

Hi there, I'm an electrical Engineer expert expert on PCB and responsible for designing, developing, and maintaining printed circuit boards used in electronic devices and systems. Consider factors such as signal integrity, power distribution, thermal management, and Manu factorability, Electronic components, circuit design, and PCB manufacturing processes Familiarity with PCB Schematics fabrication and assembly technologies, https://www.freelancer.com.bd/u/GdevDataSceince Let's discuss this further via chat, and I'll start your project right now. Thanks Gdev
$140 USD in 7 days
3.3
3.3

With 5+ years of experience in power electronics and PCB design, I understand that you are specifically looking for a ready-made, physically tested pure sine wave inverter design—not a new design developed from scratch. If I have a suitable existing design matching your required voltage and power range, I can provide the available package for your evaluation, including hardware test evidence, output waveform results, tested load data, PCB information, design files, firmware, BOM, transformer specifications, calibration/test procedures, and prototype support. Before committing to compatibility, I would verify the exact available design against your requirements for 12/24/36/48 V input, 120/220 V output, 50/60 Hz operation, low-frequency transformer topology, 1.5–12 kW power range, battery charging, ATS functionality, and protection features. Commercial manufacturing rights, exclusivity, licensing terms, and permission to modify and sell products based on the design should be clearly agreed in writing before transferring the complete source package. If your requirement is strictly for an already built and tested design, I would only proceed if I can provide genuine evidence of real hardware validation rather than claiming an untested reference design.
$40 USD in 2 days
2.4
2.4

I am interested in working on your Ready-Made, Tested Pure Sine Wave Inverter project. I can help identify, evaluate, or develop a reliable inverter solution capable of providing clean, stable pure sine wave AC output from a DC power source. My focus will be on selecting an appropriate proven design while considering output power, input voltage, efficiency, waveform quality, thermal performance, and overall reliability. I can assist with reviewing existing inverter designs, selecting suitable power components, verifying the inverter topology, and evaluating critical sections such as the DC-DC stage, MOSFET/IGBT switching stage, gate drivers, output filtering, feedback control, and protection circuits. Testing can include output voltage and frequency verification, waveform quality, load performance, temperature monitoring, efficiency, and protection behavior under practical operating conditions. I am detail-oriented and committed to providing a dependable, thoroughly tested solution rather than an unverified prototype. I can provide the required technical documentation, component information, test results, and recommendations for final implementation or manufacturing. I am ready to discuss your required input voltage, AC output voltage/frequency, continuous and peak power ratings, enclosure requirements, and testing criteria so the inverter can be matched precisely to your application.
$150 USD in 3 days
2.3
2.3

Hello. My name is Eshmum, and I have a complete, tested, and production-ready pure sine wave inverter design that is available for sale or licensing, and I have successfully delivered this design to multiple clients who are now manufacturing and selling products based on it. My inverter design meets your requirements with low-frequency transformer topology, SPWM control, MOSFET-based H-bridge, and support for 12V, 24V, and 48V DC inputs, and it has been physically built and tested on real hardware at power levels up to 5kW continuous. The design includes a complete package with full schematics, editable PCB design files, Gerber files, BOM, firmware and source code, microcontroller programming files, transformer specifications, calibration instructions, and test procedures, and I can also scale the design to your requested 12kW power range with additional engineering support if needed. I can provide photos and videos of the working inverter, output waveform measurements showing pure sine wave output, maximum tested load results, and PCB photos of units already manufactured using this design. I am ready to start immediately, and I look forward to collaborating. Best Regards. Eshmum.
$140 USD in 7 days
0.4
0.4

Have you already got a real, tested pure sine wave inverter platform you can license or sell—covering 12/24/36/48V DC inputs to 120/220V AC (50/60Hz) with SPWM, MOSFET H-bridge, and full protections (short-circuit, overload, under/over-voltage, over-temp)? I’m looking specifically for a low-frequency transformer based design already proven on hardware—not a “from-scratch” concept. If you provide a complete package (schematic, editable PCB + Gerbers, BOM, firmware/source + MCU programming, transformer specs, calibration steps, test procedure) plus photos/videos and scope captures of waveform and max tested load, I can review for manufacturability and commercial rights. Prototype test support and evidence of units shipped using the same design matter. Share your build history, measurement screenshots, and licensing/manufacturing terms, then confirm a price and deliverables. Are you ready to sell/licence this inverter design package for production?
$140 USD in 7 days
0.0
0.0

Need a proven, production-ready pure sine inverter design fast—this is the right moment to license or buy an already built 12/24/36/48V DC to 120/220V AC system (50/60Hz) rather than risk months of R&D. You must provide real hardware evidence: photos/videos of the working unit, oscilloscope output waveform, max tested load, and PCB photos—no “layout-only” bids, and the inverter must have been physically tested. I’m ready to evaluate and negotiate commercial manufacturing rights for a low-frequency transformer based, MOSFET H-bridge, SPWM-controlled design (≈1.5kW–12kW continuous) with charger/AC transfer, plus the full protection stack (short-circuit, overload, battery under/over-voltage, over-temperature). Please include complete schematic, editable PCB (files + Gerbers), BOM, firmware/source + microcontroller programming, transformer specs, calibration steps, and test procedure, along with transformer/assembly notes and prototype support.
$140 USD in 7 days
0.0
0.0

Santo Domingo, Dominican Republic
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